DVC is going to work best for people who are committing to annual (or every other year) Disney trips, who can preferably pay cash for their contract, and can book 11 months in advance (or at least commit by 7 months).
The DVC salespeople will have been pushing the Poly and Copper Creek, buying direct. They will cost $176 per point if you buy. However, any resort -- including Saratoga -- can be had either direct, or at a significant savings via the resale market.
You should research thoroughly to understand the difference between direct and resale, as well as the following terms:
- home resort booking
- banking
- borrowing
- use year
- annual dues
DVC is a long-term commitment with a significant up-front cost and annual costs thereafter. DVC points are best used to book DVC stays, even though Disney will push that you can use them elsewhere. The trades are rarely a good value, especially when done with points purchased direct in 2017. (The economics have changed over time.)
If you would take those vacations to Disney regardless and have the disposable income to make the purchase work, it can be a great way to help combat the inflation of deluxe resort stays. If you're happy at Value resorts, don't travel to Disney frequently, or simply cannot make the booking commitments of 11 months/7 months, you may find it not to be a fit.